Press attachment for feeding roll leaves



Dec. 3, I929.

R. LANGE PRESS ATTACHMENT FOR FEEDING ROLL LEAVES Filed Dec. 11. 1926 4 Sheets-Sheet 1 I IN VENT UK M 4:

' QS ATTORN Yr Dec. 3, 1929.. R. LANGE PRESS ATTACHMENT FOR FEEDING ROLL LEAVES 4 Sheets-Sheet 2 Filed Dec. 11, 1926 ispi. {kn

INVENTOR 0? 9% v A'TTORNE A Dec. 3, 1929. LANGE 1,737,593

PRESS .*\'1TAC1'IMI]I IT FOR FEEDING ROLL LEAVES Filed Dec. 11, 1926 4 Sheets-Sheet 5 6|3 1f v I I 4 5 INVENTOR g 7/ 67 BY 32401 6 jg; Z 62 x if 3, 1929. R. LANGE PRESS ATTACHMENT FOR FEEDING- ROLL LEAVES Filed D90. 11. 1926 4 Sheetq-Shqet 4 IN VEN T OR A TTORN Yf ll atented Dec. 3, 1929 UNITED STATES RICHARD LANGE, OF LEONIA, NEW JERSEY PRESS ATTACHMENT FOR FEEDING ROLL LEAVES Application filed December 11, 1926. Serial No. 154,172.

This invention relates to roll-leaf feeding mechanism for press attachment for the purpose of embellishing articles with roll or metallic leaf, and has for its object the provission of a construction which is caused to operate only when the impress has been made, that is to say, the roll-leaf or equivalent is advanced or fed forward whenever the impression bed or die has made contact with the article to be stamped, and the impress is made.

Another object includes the provision of a deflecting means or throw-off which normally holds the leaf strip out of contact with the die, but momentary contact with the die is permitted to be made for the impress.

A further object is the provision of a quickly removable and easily adjustable makeready plate; I also provide a construction whereby said plate is quickly heated and the temperature thereof is under ready control. My construction further provides individual spindles for carrying the several leaf-rolls in ofi'set relation, whereby any roll is removable and renewable without disturbing the other rolls. My construction provides also for easy threading of the leaf-roll between the rollers; I also provide means for controlling the rate at which the leaf is pulled or advanced, which rate varies from rest or zero acceleration to the maximum velocity at its half way or midpoint and then again retards to zero or rest for the impress or the stamping and printing contact to be made.

I attain these objects by theconstruction illustrated in the accompanying drawings, in which 0 Fig. 1 is a view in side elevation of a press attachment embracing my invention.

Fig. 2 is a top plan view of the same.

Fig. 3 is a view in front elevation, showing the leaf feed control and the heating elements back of the platen.

Fig. 4 is a. view taken on the'line 44 of Fig. 3, looking in the direction of the arrows.

Fig; 5 is a view taken on the line 5-5 of Fig. 2.

Fig. 6 is a view in elevation of the leaf feed- Other objects will appear hereinafter, and

mg control and associated parts, viewed from the side opposite to that shown in Fig. 1.

Fig. 7 is a View in elevation of my press at tachment with the press plate in closed posi tion and the impression bed or die in contact with the sheet to be impressed and embellished.

Fig. 8 is an enlarged view showing the feed trip in detail, and

Fig. 9 is an enlarged view of a portion of the control clutch of Fig. 5.

The same numerals refer to like parts throughout the several views.

In printing and embossing press attachments, where bronze leaf, gold leaf, or leaf roll is used for embellishing and illuminating headings, box covers, and the like it is of great importance that the leaf be pulled. just far enough for the new impress with no loss of unused leaf, and that said leaf be advanced without breaks, so as to prevent loss of time and waste of material. It is also important that the advance of the leaf to its new position be completed within the time allotted to the press plate for its opening and closing or impress motion. The leaf is rather frail, and subject to breakage, particularly where the impress has been made. Consequently, a gentle initial or starting pull is desirable.

This gentle starting pull is rapidly accelerated to its maximum speed at midpoint, and then as quickly retarded to rest. By my construction the leaf is advanced during the short interval of time that it takes the press plate to retreat and advance between the pea riods of time that theimpress is made. In order that the best results in embellishing and embossing be obtained and quickly accomplished, it is important that the temperature of the make-ready platen be under quickly responsive control, and that the leaf be free to move without coming in contact with the platen. :The construction, moreover, provides for contact of the leaf with the platen only while the impress is made.

In the accompanying drawings, 1 have illustrated a construction which embodies the principles of my invention and exemplifies my improved and novel construction for effooting the purposes herein enumerated and set forth. To this end I provide a suitable press frame 20 with a head 21 having thereon leaf pulling mechanism 22 and leaf controlling clutch mechanism 23. The frame is also provided with the thermal body plate 24 on which is removably attached the impression platen Adjacent to the-thermal body plate there is affixed the throw off bracket 26 which carries the throw off 27 for holding the leaf out of plate contact by the action of spring 27". On or near the lower part of the frame 20, there isattached the leaf-roll supporting arm 28, which carries a number of spindles 29;. These spindles are affixed at rightangles to said arm, and are of sufficient length for supporting the spools 30 in staggered relation. The leaf rolls 31 are supported on the spools 30; which are provided With set-screws 32, for adjustably holding the spools in position on the spindles, 'so that the roll leaf is fed over the surface of the platen 25. This arrangement admits of easy adjustment, and permits also the removal of any roll without disturbing the other rolls. The spools are preferably, but not necessarily, of different widths for leaf material of different sizes. The rollleaf 33 is fed usually-one at a time from its roll over the leaf guide 34, througlrthe throwoff 27, then in front of'the platen 25, thence over the upper leaf guide 35 and to the leafpulling mechanism 22.

This mechanism comprises pairs of rolls arranged in head 21, side by side, and at different levels for receiving and pulling either one or several leaf strips of the same or of different sizesof leaf as may be required by the work at hand.

Each of these stripsis pressed against the knurled surface of a roll 36 by a companion roll 36, whichis pivotally supported in arms 21, and tensionedby springs 50 and 51. .The.

leaf pullingroll 36 of each pair of rolls is positively advanced in this case, as in my former Patent No; 1,669,477 by means of a suitable lace or chain 37. In other words-eachroll 36 is-provi ded with a lace 37 one end of which is-wound on said roll and the other .is

hooked on to and operated by the-sectorarmz chain 37 is hooked inone of the row of holes:

on arm 38, see Fig. 6. The' length of the pull as well as the acceleration is; therefore, varied by the position of the hooked end as will be readily understood. rolls 36' are positively driven from rolls 36 by suitable means, as gears 52. The sector arm 38 and its companion control 39 are. unit'- I The main rolls 362 of the leaf-pullingmechanism are knurled to better grip and hold the roll-leaf strip .33..

The 1 companion ed and pivotally mounted on a pivot 40, so as to move in unison thereon. Member 39 is provided with a channel 41, in which operates a roller 42 on the arm 43 of the controlling clutch mechanism 23. This arm is operated from a motor 44 by means of the drive shaft 45 and gears 46 and 47, whenever the clutchrelease or detent 48 is disengaged from the stop 49, thereby rendering effectivethe operating spring 53 to wind up the clutch or detentengaging member 54 and thus engage the friction clutch. 55, to cause the clutch shaft 56 to rotate with said clutch and its drive gear. At this stage the detent engaging member 54, the clutch member 55, and clutch shaft 56 all rotate in unison in the'direction indicated by the arrow on Fig. 8. The rotation of the clutch shaft, of course, will also cause the clutch arm. 43 to rotate, and thus cause the sector arm 38 and control member 39 to oscillate and ad Vance the feed rolls and roll leaf by means of the pull cords, or chains 3.7, as stated above.

It is obvious that the advance of the roll leaf must take place during the time that the press plate 57 moves back and forth, or

is out of contact with the roll leaf and thean impress is. made, that-is, when the press plate assumes the positionindicated in Fig.

7:, the clutch mechanism is placed again in.

condition to cause the leaf advancing or leaf pulling mechanism and control to become effective as follows:

lVhenever the press plate-closes onthe impress platen, that is, When the print or impression ismade, the, trip-bar. 60 on the press 13late:engagesthe end of the trip finger 61,and

raises the end thereof. Trip finger-.61 is. at-- tached to the toggle rocking bar 62,.whieh carries the toggle arms 63 and rocks therewith. This armcarries pivotally mounted thereon a toggle link 64, which pivotally engages a companion toggle-link 65. This link is pivotally mounted onthe detent carrying arm 66, and is provided with a trip finger 6.7, which engages the trip pin 68. This pin iscarried on the detent carrying arm 66, andi s adjusted to the proper tripping position by any suitable means, as a set screw 69. Thedetent carrying arm is pivotally supported on :1 lug 70, and is biased in detent engaging position by suitable means, as aspring 71. A toggle sustaining spring 72 engages the toggle eye 73011 the togglearm-63, andtends to hold the toggle in raised position and the trip finger in plate engaging position. When now a printing impress is made, that is, the trip bar 60 has engaged the curved end of the trip finger 5 61, and thereby sufficiently raised the end of the finger to rock the bar 62 and its toggle arm 63, the toggle links 64 and 65 will drop down into straightened or detent tripping position. The instant now that the trip bar is rocked, as when the press plate recedes, the straightened toggle links will serve to displace or rock the trip finger 66, and thus disengage the detent 48 to throw the cluch into operation in the manner described above, whereby the roll leaf is advanced into neW position for the next succeeding impress. The straightened toggle is broken by reason of the trip finger 67 coming in contact with the trip pin 68, which is adjusted to the prop er position. The toggle member will then again assume the position indicated by Fig. 8.

From the disclosure thus far given, it is apparent that the roll-leaf is advanced only in response to an impress contact having been made, and its advance is timed to start from rest to maximum acceleration, and again to zero, all during the time that the press plate opens and closes.

In order to quickly regulate or control the temperature of the platen and the press body plate, I provide heater units 80, which are set in recesses 81, so as to bring the thermal units in close proximity with the platen. This arrangement provides means for rapidly and efiiciently heating the platen, and therefore also the roll leaf at points of contact.

Having now described my invention, What I claim as new and useful, and desire to secure my United States Letters Patent is:

1.. In a press attachment for feeding roll leaf or the like, the combination of an impress platen and a press plate, and means for feeding roll-leaf over said impress platen in response to the impress contact of the press plate having been made.

2. In a press attachment for feeding roll leaf or the like, the combination of an impress platen and a press plate, means for holding the roll-leaf normally out of contact with said impress plate, means for advancing the roll-leaf over said impress plate in response to the impress contact of the press plate having been made. and means for accelerating said advance of the leaf.

3. In a press attachment for feeding roll leaf or the like, the combination of an impress platen, means for heating said platen, means for holding roll-leaf out of contact with said platen, a movable press plate operating to bring said roll-leaf temporarily into contact with said platen, and means rendered effective by said press plate for advancing said roll-lcaf a definite distance after the press plate has made impress contact.

at. In a press attachment for applying roll leaf and the like to an article, the combination of means for carrying a plurality of leaf rolls supported independently of each other, to thereby permit replacement of any roll without removing any other roll, means for feeding and advancing any one or all of said leaf material in unison or at different rates, and means for rendering operative said leaf advancing means only after leaf material has been applied to the article.

5. In a press attachment for applying roll leaf and the like to an article, the combination of means for carrying a plurality of leaf rolls at different elevations, an impress platen, and means to support in spaced relation from said impress platen the roll leaf drawn from any one of said leaf rolls, means for causing said spaced leaf to be brought into contact with said impress platen, means to advance the leaf material into new position, and means for rendering operative said leaf advancing means after the contact making position has been made and broken.

6. In a press device for applying roll-leaf or metal leaf to an article, the combination of an impress platen and a press platen, one of said platens being movable back and forth, means for suspending said leaf material over one of said platens, means forbringing the other of said platens on to said leaf material and impressing the same on to the other of said platens, means for pulling forward said material to move from rest to maximum speed and back to rest while the movable platen is moved away from the other of said platens, and a clutch for temporarily operating said leaf pulling means.

In testimony whereof I have hereunto set my hand on this 30th day of November, A. D.

RICHARD LANGE. 

